Fixes crash when loading a config with zero number of default_filament_profile values. Fixes SPE-427
Fixes crash when loading a config with zero number of default_filament_profile
values. Fixes SPE-427

prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r